diff --git a/winpr/libwinpr/sspi/sspi_export.c b/winpr/libwinpr/sspi/sspi_export.c
index 11c7744d8..ea4f69a2d 100644
--- a/winpr/libwinpr/sspi/sspi_export.c
+++ b/winpr/libwinpr/sspi/sspi_export.c
@@ -25,12 +25,15 @@
 #define SEC_ENTRY __stdcall
 #define SSPI_EXPORT	__declspec(dllexport)
 #else
+#include <winpr/winpr.h>
 #define SEC_ENTRY
-#define SSPI_EXPORT
+#define SSPI_EXPORT WINPR_API
 #endif
 
+#ifdef _WIN32
 typedef long LONG;
 typedef unsigned long ULONG;
+#endif
 typedef LONG SECURITY_STATUS;
 
 /**